:root {
    --primary: #0f766e;
    --primary-soft: #e6f2ee;
    --background: #fcfcf9;
    --surface: #fff;
    --foreground: #0f172a;
    --muted: #52616b;
    --border: #dbe2e0;
    --radius: 16px;
    --shadow: 0 18px 50px #132c3412;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 108px; }
body { margin: 0; background: var(--background); color: var(--foreground); font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif; font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a, summary { touch-action: manipulation; }
a:hover { color: var(--primary); }
:focus-visible { outline: 3px solid #0284c7; outline-offset: 5px; }
img { max-width: 100%; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { line-height: 1.14; letter-spacing: -.035em; font-weight: 650; text-wrap: balance; }
h2 { font-size: clamp(32px, 3.2vw, 46px); margin: 16px 0 24px; }
h3 { font-size: 22px; line-height: 1.3; letter-spacing: -.02em; }
p { color: var(--muted); }
strong { font-weight: 650; }
small { font-size: 12px; }
i { flex: none; }
.wrap { width: min(1240px, calc(100% - 96px)); margin-inline: auto; }
.section { padding-block: 88px; }
.soft { background: #f0f4f1; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split > * { min-width: 0; }
.section-head { max-width: 780px; margin-bottom: 40px; }
.section-head p, .split > div > p { font-size: 18px; line-height: 1.75; }
.centered { text-align: center; margin-inline: auto; }
.eyebrow { display: block; font-size: 12px; font-weight: 700; letter-spacing: .1em; line-height: 1.7; color: var(--primary); }
.fine { font-size: 13px !important; line-height: 1.7; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 14px; min-height: 52px; padding: 12px 22px; border: 1px solid var(--primary); border-radius: 8px; background: var(--primary); color: #fff; font-weight: 650; font-size: 15px; line-height: 1.4; text-align: center; transition: background .18s ease, border-color .18s ease, box-shadow .18s ease; }
.button:hover { background: #095e58; color: #fff; box-shadow: 0 4px 12px #0f766e20; }
.button.small { min-height: 44px; padding: 9px 15px; font-size: 13px; white-space: nowrap; }
.button.outline { color: var(--foreground); background: transparent; border-color: #b9c9c2; }
.button.outline:hover { background: var(--primary-soft); border-color: var(--primary); }
.text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; font-weight: 650; font-size: 15px; line-height: 1.5; }
.text-link i { transition: transform .18s ease; }
.text-link:hover i { transform: translateX(3px); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; }
.skip-link { position: fixed; top: -90px; left: 20px; z-index: 100; background: white; padding: 12px 20px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 50; background: var(--background); border-bottom: 1px solid var(--border); }
.nav-shell { width: min(1440px, calc(100% - 64px)); margin: auto; min-height: 80px; display: flex; gap: 30px; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-size: 24px; font-weight: 750; letter-spacing: -.04em; color: var(--foreground); }
.brand img { border-radius: 7px; }
.desktop-nav { display: flex; gap: 28px; align-items: center; }
.desktop-nav > a, .desktop-nav summary { font-size: 14px; font-weight: 600; min-height: 44px; display: flex; align-items: center; gap: 7px; }
.site-header details { position: relative; }
.site-header summary { cursor: pointer; list-style: none; }
.site-header summary::-webkit-details-marker { display: none; }
.site-header summary .bi-chevron-down { font-size: 10px; }
.nav-dropdown { position: absolute; top: calc(100% + 8px); left: -16px; min-width: 245px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); padding: 8px; z-index: 55; }
.nav-dropdown a { display: block; min-height: 44px; padding: 10px 12px; font-size: 13px; font-weight: 600; border-radius: 6px; }
.nav-dropdown a:hover, .nav-dropdown a[aria-current] { background: var(--primary-soft); }
.nav-dropdown small { display: block; color: var(--muted); font-size: 12px; font-weight: 400; }
.nav-actions { display: flex; align-items: center; gap: 20px; }
.login { font-size: 14px; font-weight: 650; min-height: 44px; display: flex; align-items: center; padding-inline: 8px; }
.language summary { font-size: 12px; display: flex; align-items: center; gap: 7px; min-height: 44px; padding-inline: 4px; }
.language .bi-globe2 { font-size: 16px; }
.language .nav-dropdown { left: auto; right: 0; min-width: 140px; }
.mobile-nav { display: none; }
.reference-hero { max-width: 1560px; width: calc(100% - 64px); margin: 24px auto 24px; padding: 58px 40px 138px; border-radius: 40px; background: #bfe9e9 url('../images/gsender-hero-garden.webp') center bottom/cover no-repeat; overflow: hidden; text-align: center; }
.reference-copy { max-width: 960px; margin: auto; }
.hero-kicker { display: inline-block; padding: 7px 17px; border: 1px solid #ffffffb3; border-radius: 30px; background: #f5ffffd9; color: #155e63; font-size: 13px; font-weight: 650; }
.reference-hero h1 { max-width: 870px; margin: 27px auto 22px; font-size: clamp(36px, 4.2vw, 58px); line-height: 1.12; letter-spacing: -.035em; font-weight: 750; color: #102f40; }
.hero-lead { max-width: 745px; margin: auto; font-size: 18px; line-height: 1.65; color: #244756; text-wrap: pretty; }
.hero-actions { justify-content: center; margin: 30px 0 24px; gap: 12px; }
.hero-trial, .hero-secondary { min-height: 56px; border-radius: 10px; padding-inline: 24px; }
.hero-secondary { background: #f8fffff0; color: #164b48; border-color: #f8ffff; }
.hero-secondary:hover { background: #fff; color: #0f5f59; }
.hero-secondary .bi-play-circle { font-size: 20px; }
.hero-benefits { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 28px; }
.hero-benefits > a { display: flex; align-items: center; gap: 9px; min-height: 44px; padding: 9px 14px; border: 1px solid #ffffffb3; background: #f4ffffde; border-radius: 40px; font-size: 13px; font-weight: 600; color: #21444d; }
.hero-benefits > a:hover { background: #fff; }
.hero-benefits i { font-size: 17px; color: var(--primary); }
.hero-quota { font-size: 12px; color: #284953; margin: 15px auto 0; }
.meta-trust { display: flex; align-items: center; gap: 30px; padding-block: 12px 28px; border-bottom: 1px solid var(--border); }
.meta-lockup { display: flex; align-items: center; gap: 14px; flex: none; }
.meta-lockup img { display: block; object-fit: contain; }
.meta-lockup strong { font-size: 16px; white-space: nowrap; }
.meta-trust p { max-width: 410px; font-size: 14px; margin-right: auto; }
.meta-trust .text-link { flex: none; font-size: 14px; }
.inbox-section { padding-top: 64px; }
.split-head { display: grid; grid-template-columns: 1.1fr 1fr; gap: 80px; align-items: end; max-width: none; }
.split-head h2 { margin-bottom: 0; }
.channel-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.channel-row > span { padding: 7px 12px; border: 1px solid var(--border); border-radius: 6px; background: #fff; font-size: 12px; font-weight: 600; }
.product-demo { scroll-margin-top: 16px; }
.inbox-preview { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.inbox-preview video { display: block; width: 100%; height: auto; background: #eff4f1; aspect-ratio: 2/1; object-fit: contain; }
.inbox-preview figcaption { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px 24px; padding: 17px 22px; font-size: 12px; color: var(--muted); border-top: 1px solid var(--border); }
.inbox-preview figcaption > span:first-child { display: flex; align-items: center; gap: 8px; color: var(--foreground); font-weight: 650; }
.inbox-preview figcaption i { color: var(--primary); font-size: 17px; }
.workflow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin: 34px 0 0; padding: 0; list-style: none; }
.workflow li { display: flex; gap: 16px; min-width: 0; padding-top: 20px; border-top: 1px solid var(--border); }
.step-number { font-size: 13px; font-variant-numeric: tabular-nums; color: var(--primary); padding-top: 4px; }
.workflow h3 { font-size: 19px; margin-bottom: 10px; }
.workflow p { font-size: 14px; }
.product-split { gap: 54px; }
.benefit-list { padding-left: 20px; margin: 22px 0 15px; color: var(--muted); font-size: 15px; }
.benefit-list li { margin-bottom: 10px; padding-left: 4px; }
.benefit-list li::marker { color: var(--primary); }
.product-figure { padding: 10px; border: 1px solid var(--border); border-radius: var(--radius); background: white; box-shadow: var(--shadow); }
.product-figure img { display: block; width: 100%; height: auto; border-radius: 8px; }
.product-figure figcaption { padding: 12px 8px 3px; color: var(--muted); font-size: 12px; }
.connection-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; }
.connection-grid article { border-top: 1px solid var(--border); padding-top: 24px; }
.connection-icon { color: var(--primary); font-size: 28px; display: block; margin-bottom: 18px; }
.connection-grid h3 { margin-bottom: 16px; }
.connection-grid p { max-width: 530px; margin-bottom: 14px; }
.mobile-split .product-figure { width: min(100%, 340px); justify-self: center; }
.mobile-split .fine { margin-top: 18px; }
.sdk-row { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 20px 0 12px; font-size: 14px; border-block: 1px solid var(--border); }
.sdk-row a { min-height: 48px; display: inline-flex; align-items: center; font-weight: 600; }
.developer { background: #0f1e2b; color: #fff; }
.developer p { color: #b6c8d0; }
.developer .eyebrow, .developer .text-link { color: #9fe3c7; }
.developer .fine { margin-top: 20px; }
.smtp-config { display: grid; grid-template-columns: 1fr 1fr; border-block: 1px solid #ffffff25; gap: 10px; margin: 26px 0 12px; padding: 18px 0; font-size: 14px; }
.smtp-config > span { font-size: 12px; color: #b6c8d0; }
.code-preview { background: #101e2c; color: #c3e4db; min-width: 0; overflow: hidden; border-radius: 12px; border: 1px solid #ffffff25; }
.code-heading { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 20px 24px; border-bottom: 1px solid #ffffff20; font-size: 12px; color: #a3b8c3; }
.code-heading span:first-child { color: #a2e8ca; }
.code-preview pre { margin: 0; padding: 26px; overflow: auto; max-width: 100%; font-size: 13px; line-height: 1.9; tab-size: 2; }
.code-foot { font-size: 12px; color: #b4c2cc; padding: 0 26px 23px; }
.use-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
.use-cases article { display: flex; flex-direction: column; align-items: flex-start; border-top: 1px solid var(--border); padding-top: 24px; }
.use-cases h3 { font-size: 21px; margin-bottom: 14px; }
.use-cases p { font-size: 15px; margin-bottom: 16px; }
.use-cases .text-link { margin-top: auto; }
.pricing-section { background: #edf3ef; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.price-card { padding: 30px 26px; border: 1px solid var(--border); border-radius: 14px; background: #fff; display: flex; flex-direction: column; align-items: flex-start; min-width: 0; }
.price-card.featured { border-color: #7fae9e; box-shadow: 0 0 0 1px #7fae9e; }
.price-card h3 { font-size: 25px; margin: 20px 0 22px; min-height: 65px; }
.price-card p { font-size: 14px; }
.price-card .price-label { font-size: 12px; margin-bottom: 8px; }
.price-card .price { font-size: 36px; font-weight: 650; letter-spacing: -.035em; color: var(--foreground); line-height: 1.2; margin-bottom: 18px; }
.price span { display: block; font-size: 13px; font-weight: 400; letter-spacing: 0; color: var(--muted); margin-top: 6px; }
.price-card ul { padding-left: 19px; margin: 24px 0 30px; color: var(--muted); font-size: 14px; }
.price-card li { margin-bottom: 10px; }
.price-card li::marker { color: var(--primary); }
.price-card .button { margin-top: auto; width: 100%; font-size: 14px; padding-inline: 14px; }
.pricing-note { max-width: 750px; margin: 26px auto 0; text-align: center; font-size: 13px; }
.faq { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary { display: flex; justify-content: space-between; gap: 18px; padding: 20px 0; cursor: pointer; list-style: none; font-weight: 600; font-size: 16px; line-height: 1.5; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary i { font-size: 22px; color: var(--primary); }
.faq details[open] summary i { transform: rotate(45deg); }
.faq details p { font-size: 15px; margin-bottom: 24px; padding-right: 28px; }
.final-cta { background: #e5efe8; padding: 70px 0; text-align: center; }
.final-cta h2 { margin-inline: auto; max-width: 750px; }
.final-cta p { max-width: 680px; margin-inline: auto; font-size: 18px; }
.final-cta .actions { justify-content: center; margin-top: 26px; }
.site-footer { display: grid; grid-template-columns: 1.25fr 1fr 1fr 1fr; gap: 40px; padding-block: 58px; }
.site-footer > div { display: flex; flex-direction: column; align-items: flex-start; }
.site-footer strong { font-size: 13px; margin-bottom: 12px; }
.site-footer a:not(.brand) { display: flex; align-items: center; min-height: 44px; padding-block: 7px; font-size: 13px; line-height: 1.5; }
.site-footer p { font-size: 14px; margin: 18px 0; }
.site-footer small { font-size: 12px; color: var(--muted); }
@keyframes product-arrive { from { opacity: .65; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
.is-revealed { animation: product-arrive .55s ease-out both; }
@media (max-width: 1199px) {
    .nav-shell { gap: 20px; width: calc(100% - 48px); }
    .desktop-nav { gap: 20px; }
    .nav-actions { gap: 12px; }
    .wrap { width: calc(100% - 64px); }
    .split, .split-head { gap: 40px; }
    .meta-trust { gap: 20px; }
    .meta-lockup { gap: 8px; }
    .meta-lockup img { width: 120px; height: 52px; }
    .price-card { padding: 28px 20px; }
    .price-card .price { font-size: 32px; }
    .site-footer { gap: 30px; }
}
@media (max-width: 999px) {
    .desktop-nav { display: none; }
    .mobile-nav { display: block; }
    .mobile-nav summary { display: grid; place-items: center; width: 44px; height: 44px; font-size: 26px; }
    .mobile-nav .nav-dropdown { left: auto; right: 0; width: 280px; max-width: calc(100vw - 40px); max-height: 75vh; overflow-y: auto; }
    .nav-actions { margin-left: auto; }
    .reference-hero { width: calc(100% - 40px); padding: 45px 28px 110px; border-radius: 30px; }
    .reference-hero h1 { max-width: 740px; }
    .meta-trust { flex-wrap: wrap; gap: 12px 24px; }
    .meta-trust p { flex: 1; max-width: none; min-width: 250px; font-size: 13px; }
    .meta-trust .text-link { margin-left: auto; }
    .section { padding-block: 70px; }
    .split, .split-head { grid-template-columns: 1fr; gap: 32px; }
    .split-head h2 { max-width: 730px; }
    .split-head > p { max-width: 700px; }
    .product-split > div { max-width: 750px; }
    .product-figure { max-width: 760px; width: 100%; }
    .mobile-split > figure { order: 1; }
    .mobile-split .product-figure { width: min(100%, 290px); }
    .workflow { gap: 20px; }
    .workflow li { gap: 11px; }
    .workflow h3 { font-size: 18px; }
    .pricing-grid { grid-template-columns: 1fr; }
    .price-card { padding: 30px; }
    .price-card h3 { min-height: 0; }
    .price-card .button { width: auto; min-width: 235px; }
    .price-card .price { font-size: 36px; }
    .connection-grid { gap: 32px; }
    .use-cases { gap: 26px; }
    .use-cases h3 { font-size: 20px; }
    .faq { grid-template-columns: 1fr; gap: 25px; }
    .site-footer { grid-template-columns: 1fr 1fr; gap: 38px; }
}
@media (max-width: 600px) {
    html { scroll-padding-top: 90px; }
    .wrap { width: calc(100% - 36px); }
    .section { padding-block: 56px; }
    .nav-shell { width: calc(100% - 28px); min-height: 72px; gap: 12px; }
    .brand { font-size: 22px; gap: 7px; }
    .brand img { width: 28px; height: 28px; }
    .nav-actions { gap: 8px; }
    .nav-actions .login, .nav-actions .button { display: none; }
    .reference-hero { width: calc(100% - 20px); margin-top: 10px; padding: 34px 18px 92px; border-radius: 25px; background-position: center bottom; }
    .hero-kicker { font-size: 11px; padding-inline: 12px; }
    .reference-hero h1 { font-size: clamp(31px, 8.2vw, 42px); margin: 24px auto 20px; }
    .hero-lead { font-size: 16px; line-height: 1.65; }
    .hero-actions { flex-direction: column; align-items: stretch; max-width: 330px; margin: 26px auto 22px; gap: 10px; }
    .hero-trial, .hero-secondary { min-height: 52px; font-size: 14px; padding-inline: 14px; }
    .hero-benefits { gap: 7px; margin-top: 24px; }
    .hero-benefits > a { min-height: 44px; font-size: 11px; padding: 8px 10px; gap: 6px; }
    .hero-benefits i { font-size: 14px; }
    .hero-quota { font-size: 12px; margin-top: 14px; }
    .meta-trust { padding-block: 4px 24px; gap: 10px 16px; }
    .meta-lockup { gap: 10px; }
    .meta-lockup img { width: 126px; height: 55px; }
    .meta-lockup strong { font-size: 16px; }
    .meta-trust p { flex-basis: 100%; min-width: 0; max-width: 380px; }
    .meta-trust .text-link { margin-left: 0; font-size: 13px; }
    h2 { font-size: 32px; margin-top: 14px; }
    .section-head { margin-bottom: 28px; }
    .section-head p, .split > div > p { font-size: 16px; }
    .split-head { gap: 20px; }
    .channel-row { gap: 7px; margin-bottom: 20px; }
    .channel-row > span { font-size: 11px; padding: 6px 9px; }
    .inbox-preview { border-radius: 10px; }
    .inbox-preview figcaption { padding: 13px 15px; font-size: 12px; gap: 6px; }
    .inbox-preview figcaption > span { flex-basis: 100%; }
    .workflow { grid-template-columns: 1fr; gap: 18px; margin-top: 24px; }
    .workflow li { gap: 18px; padding-top: 18px; }
    .workflow h3 { font-size: 19px; margin-bottom: 8px; }
    .workflow p { font-size: 14px; }
    .product-figure { padding: 6px; border-radius: 11px; }
    .product-figure figcaption { padding: 10px 6px 4px; }
    .connection-grid { grid-template-columns: 1fr; gap: 32px; }
    .connection-icon { margin-bottom: 14px; }
    .connection-grid h3 { font-size: 23px; }
    .connection-grid p { font-size: 15px; }
    .sdk-row { gap: 4px 19px; font-size: 13px; }
    .code-preview pre { padding: 20px 16px; font-size: 11px; }
    .code-heading { padding: 16px; font-size: 11px; }
    .code-foot { padding: 0 16px 20px; font-size: 12px; }
    .smtp-config { font-size: 13px; }
    .smtp-config > span { font-size: 11px; }
    .use-cases { grid-template-columns: 1fr; gap: 28px; }
    .use-cases h3 { font-size: 21px; }
    .centered { text-align: left; }
    .price-card { padding: 27px 23px; }
    .price-card h3 { font-size: 25px; }
    .price-card .button { width: 100%; min-width: 0; }
    .pricing-note { text-align: left; font-size: 12px; }
    .faq summary { font-size: 15px; }
    .faq details p { padding-right: 0; font-size: 14px; }
    .final-cta { padding: 56px 0; }
    .final-cta p { font-size: 16px; }
    .final-cta .actions { flex-direction: column; gap: 14px; }
    .site-footer { padding-block: 44px; gap: 30px 20px; }
    .site-footer > div:first-child { grid-column: 1/-1; }
    .site-footer a:not(.brand) { font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}